In a Capitalist system Money Is Power and under Neoliberal Capitalism (which is all about the State removing itself from Regulating money, or in other words removing the Power From The Vote via the mechanisms of the State, controlled by representatives chosen via said vote, exercising almost no power, which, if you think about it, is against Democracy) Money is the greatest Power there is by a wide margin (even Fascism puts the State above Money, whilst Neoliberal Capitalism does the very opposite).
So these people hoard money because they live in a system were it gives them immense Power.
In a Capitalist system Money Is Power and under Neoliberal Capitalism (which is all about the State removing itself from Regulating money, or in other words removing the Power From The Vote via the mechanisms of the State, controlled by representatives chosen via said vote, exercising almost no power, which, if you think about it, is against Democracy) Money is the greatest Power there is by a wide margin (even Fascism puts the State above Money, whilst Neoliberal Capitalism does the very opposite).
So these people hoard money because they live in a system were it gives them immense Power.
If you were a senator in 1789, you spoke for on average 39 000 people. If you are a senator today, you speak for 3 300 000 people.